- #1
Simonel
- 4
- 1
Show that The standard deviation is zero if and only if X is a constant function,that is ,X(s) = k for every s belonging to S,or ,simply X=k.
When they say constant function it means every element in S is been mapped to single element in the range.That is the single element is k.
Which means all random variables are taking a single value which is K.
I don't if I should assume that it is an equiprobable space or no.
Due to that I'm getting confused in calculating my mean n thus heading towards showing std dev 0
I don't know if I'm thinking in the right direction
When they say constant function it means every element in S is been mapped to single element in the range.That is the single element is k.
Which means all random variables are taking a single value which is K.
I don't if I should assume that it is an equiprobable space or no.
Due to that I'm getting confused in calculating my mean n thus heading towards showing std dev 0
I don't know if I'm thinking in the right direction